iBMI systems can be typically broken down into the following blocks – a) Signal acquisition and pre-processing, b) Feature extraction, c) Decoding and d) Effector. The signal acquisition block consists of a microelectrode array sampling extracellular neuronal electrical activity at around 30 - 40 kHz. This recorded activity data is conventionally passed on through wires/cables to bulky signal processing systems implementing blocks b), c) and d). These wires/cables leave an opening in the skull making the area prone to infection. They also impede the mobility of the system as a whole. To tackle the mobility issue, solutions such as [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]} with wireless transmitter electronics outside the skin have been reported. However, these still have the presence of infection-prone transcutaneous wires. Meanwhile, mobile fully implantable and hermetically sealed prototypes with decreased risk of infection have been reported in [8]}, [9]}, [10]}. However, with exponentially rising number of electrodes [11]}, [12]} and the concomitant increase in data rates, it is untenable to scale the idea of transmitting raw data in a fully implantable manner without heating up neural tissue excessively[13]}, [14]} or hitting bandwidth constraints[15]}.
